# Initial Condition

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 June 6, 2015, 07:30 Initial Condition #1 New Member   Mojtaba Ans Join Date: Mar 2015 Posts: 14 Rep Power: 3 Hi everybody; I want to simulate a free surface flow (transient) in CFX. I have to set fluid elevation as Initial Condition. The model is a reservoir that has an initial volume of water. The elevation of water surface is 2 meters. I really need your help. What should I do? Thanks, Mojtaba

 June 6, 2015, 22:31 #2 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 12,401 Rep Power: 97 Have you tried the CFX tutorials? The free surface flow over a bump tutorial looks relevant here.

June 7, 2015, 02:01
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Mojtaba Ans
Join Date: Mar 2015
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Quote:
 Originally Posted by ghorrocks Have you tried the CFX tutorials? The free surface flow over a bump tutorial looks relevant here.
Yes I did it, but my problem has not solved yet! My question is about fluid elevation in initial condition, but it isn't mentioned in the tutorial.

 June 7, 2015, 02:18 #4 Super Moderator   Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 12,401 Rep Power: 97 You can set initial conditions with simple commands like setting the initial liquid volume fraction to: step((2[m]-y)/1[m]) and the gas volume fraction to automatic.

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